Territory



J. J -BROUGHALL.

. STAMP GUIDE.

No 379,931 Patented Mar. 27,-1888.-

"mum/nu 1 i I ill I 2 Sheets-Sheet 1.-

(No Model.)

l ZSheefs-Shefi 2 'T J. J'. BROUGHALL; I

STAMP GUIDE. No.3,79, 93l.

Patented Ma ,r. 27, 188 8; 4

. U ITED STATES PATENT OFFICE.

JOHN J. 'BROUG HALL, OF BUTTE CITY, MONTANA TERRITORY.

STAM P-GU I DE'.

SPECIFICATION forming part of Letters Patent No. 379.931, dated March 27, 18 88. Application filed September 30, 1887. SerialNo. 251,121. (No model.)

To all whom it may concern:

. Be it known that I, JOHN J. BROUGHALL, of Butte City, Silver Bow county, in the Terri- ,tory of Montana, have invented new and useful Improvements inStamp-Guides; and I do hereby declare that the following is a full and.

the wooden guide-blocks and to permit them to be adjusted to compensate for wear.

A stamp-battery in action is in a condition of-continual rhythmical tremor from the regularly-recurring blows ofthe stamps, and it is well known that movable parts will be shaken out of place and every screw-nut loosened by such jarring. Oonsequentl y the bolts and nuts about a stamp-battery require constant attention to preserve the machine from self-destruction.

Stamp-mills are mostly set up and used in the mining regions where skilled mechanical help cannot readily be obtained and where the facilities for repairs are defective. It is therefore a matter of importance that the structure of the machine shall be such that repairs may blgfiasily made and with the least possible s 1 The object of my invention is to secure the wooden guide-blocks with the least possible employment of screw-bolts or other fastenings capable of being loosened by jarring, and to fashion the parts so that they may be replaced with the least possible exercise of skill.

In the accompanying drawings, Figure 1 is a perspective view of my invention. Fig. 2 is a plan embracing two guides. Fig. 3 is a front elevation of one of the same. Fig. 4 is an elevation of a part of the base-plate. Figs. 5 and 6 are respectively front and side elevations of a modification. Fig. 7 is a plan of the same, partly in section. Fig. 8 is a plan of a modification.

A is the guide-rail of the stamp-mill, and b b are the sections of the guide-block, made from pieces of squared studding or scantling of proper sizesay four by eight inches-with a semi-cylindrical channel cut in each for the stamp-stem R. This does not require much skill in fitting, because the lumber comes squared from the mill, and the workman is.

only required to out it oEf to proper length and bore or hollow out the guide.

The guide-clamp consists of two or more arms, 0, pivoted to the lugs Z Z, secured to the guide-rail, and at their free ends each is connected by a link, d, with an outwardly-movable part provided with a locking or pressure device, the function of which is to force said movable part outward and there firmly hold it. Such part and looking or pressure device may be, and is preferably, a screw-nut, e, having a clamp-screw, F, through it. It is manifest that when the parts are in position, as represented, the action of the screw F will be, first, to draw the arms 0 O togetherand move the sections b 12 toward the stamp-stem,

arm 0 wilIthen be provided on one side with the notch 9, so that, when desired, by slacking up the screw F the link and arm may be detached and the clamp opened to admit the removalor replacement of the guide-blocks b.

To thus open the clamp it is only necessary to have ready means for detachment on one side.

Instead of chain-link connections, flat arm-' links d connected to arm 0 and nut e by pivotpins, may be employed, and either one of said pivot-connections may be made with a slippin, h, easily removed.

Sometimes it may be desirable to increase the number of arms 0, and it may be done in the way shown in Figs. 1, 2, 3, the screw F being then inserted through a bar, 6', which forms a coupling-bar common to the several sets of arms 0 and their connecting-links.

A plate, 43, protects the guide-blocks b b from injury by the point ofthe clamp-screw F.

As the blocks I) wear out in the guide, so

that the stampstem is too loose, the blocks are taken out and cut away a little on their meeting sides and filled out on their outer edges when replaced in the clamp. In this way the blocks may be entirely worn out before being thrown away.

If a cam on the driving-shaft is set a little out of its place toward one side or the other, which not infrequently happens, it is easy to move the box slightly toward one side to bring the stamp-stem to the cam by cutting away one side of one block b and filling out the corresponding side of the other, so as to move the axis of the guide laterally toward one side or the other, as may be desired.

In Figs. 5, 6, 7 the side arms, 0, are shown tied together by bolts 8 s for lateral pressure. The pressure against the guide-rail is obtained by straps t and nuts u on the middle side arms, 0.

Having described my invention, I claim 1. A sectional stampguide composed of guide-blocks b b. combined with side arms hinged to the guiderail at each side of said guide-blocks and adapted to abut against the sides of the latter, a screw-nut and clampscrew opposite the front of said guide, and links pivotally connected with said screw-nut and side arms, substantially as and for the purpose set forth.

2. The combination of the side arms, each hinged at one end to a permanent support,

with the screw-nut and its screw, and the links pivotally connected with the side arms and the nut and detachable at one end, substantially as set forth.

3. The combination of the hinged side arms, 0, provided with notches g, with the screwnut and clamp-screw, and the links pivoted'at their outer ends to the side arms and having at their inner ends openings adapted to engage in said notches.

4. The combination of the side arms, 0, adapted to be pivoted to a fixed support and provided with notches g, a coupling-bar, e, links pivoted to the coupling-bar and adapted to engage said notches, and a pressure device, substantially as described, for forcing the coupling-bar outward and drawing inwardsaid side arms, substantially as set forth.

5. The combination, with the side arms adapted to be pivoted at their rear ends to a fixed support, links pivoted to the forward ends of said arms, an ou'twardlymovable part connected with the other ends of said links, and a pressure device, substantially as de scribed, for forcing the latter outward and drawing inward the said side arms, substantially as set forth.

, JNO. J. fiR-OUGHALL.

\Vitnesses GEo. J. HILLEBRAND, ALFRED HARTENWEILER. 

